A little change
The patient shook his doctor's hand in gratitude and said:"Since we are the best of friends, I would not want to insult you by offering payment. But I would like for you to know that I had mentioned you in my will.""That is very kind of you," said the doctor emotionally, and then added, "Can I see that prescription I just gave you? I'd like to make a little change..."

A customer sent an order to a distributor...
A customer sent an order to a distributor for a large amount of goods totaling a great deal of money. The distributor noticed that the previous bill hadn't been paid. The collections manager left a voicemail for them saying, "We can't ship your new order until you pay for the last one."The next day the collections manager received a collect phone call,"Please cancel the order. We can't wait that long."